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Sansui Seven - Lamp help - Is this correct?

Chris __R

Chris __R

Well-Known Member
Hi all,
For those that own the Seven, I was hoping just to confirm something about the indicator and tuning meter lamp.
I am relamping a unit I've finally gotten around to and unfortunately didn't take careful enough notes on the wiring (some of the original wires snapped off and there isn't anything to cross reference on the board for the #s 1-5 on the schematic...) so I have a couple wired incorrectly, but I'm mostly curious about the tuning meter.
It appears from the schematic that the tuning meter only turns on when AM is selected.
Is this correct?
Seems weird to me, but the schematic seems pretty straightforward.
Thanks!
Sansui Seven Lamp Schematic.jpg
 
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Looks like it to me. I read on the QRX5500A the tuning meter light is connected a little differently, to the power for the FM indicator light.
 
Chris __R said:
Hi all,
For those that own the Seven, I was hoping just to confirm something about the indicator and tuning meter lamp.
I am relamping a unit I've finally gotten around to and unfortunately didn't take careful enough notes on the wiring (some of the original wires snapped off and there isn't anything to cross reference on the board for the #s 1-5 on the schematic...) so I have a couple wired incorrectly, but I'm mostly curious about the tuning meter.
It appears from the schematic that the tuning meter only turns on when AM is selected.
Is this correct?
Seems weird to me, but the schematic seems pretty straightforward.
Thanks!
View attachment 3838658
Click to expand...
No, the tuning meter only comes on in FM. FM and AM light the Signal meter and dial pointer.
 
Actually, if that's true, then the schematic is incorrect twice. PL004 should be the FM indicator, and PL005 should be AM since that corresponds with the power going to F-1205.
 
KeithD said:
The tuning meter has no function for AM, hence why the light does not come on
Click to expand...
I guess I assumed that it would show some sort of signal for both AM and FM when dialing something in - but I guess that's what the "signal" meter is for......
But clearly the schematic shows it working for only one function and is mislabeled.
 
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